qmk_firmware/ps2_usb

PS/2 to USB keyboard converter

==============================



This firmware converts PS/2 keyboard protocol to USB.





Demostration build

------------------

In this demo build, you can try several layouts,

mouse keys and USB NKRO.



Special keys:

    Magic+0:    Qwerty with mouse keys(default)

    Magic+1:    Qwerty

    Magic+2:    Colemak

    Magic+3:    Dvorak

    Magic+4:    Workman

    Magic+N:    toggles NKRO/6KRO(6KRO by default)

    Magic+Esc:  sends Power Event

    where Magic=(LShift+RShift) or (LControl+RShift)



Keybinds:

    Fn0+(hjkl): Mouse key move(vi cursor)

    Fn0+(yuio): Mouse wheel(left,down,up,right)

    Fn0+space:  Mouse button1

    Fn0+(mnb):  Mouse buttons(1,2,3)

    Fn0+(zxc):  Media control(Volup, Voldown, Mute)

    Fn1+(hjkl): Cursor move(vi cursor)

    Fn1+(nm,.): Cursor move(Home,PageDown,PageUp,End)



    Fn2+(esdf): Mouse key move(invert T cursor)

    Fn2+(qwrt): Mouse wheel(left,down,up,right)

    Fn2+space:  Mouse button1

    Fn2+(,./):  Media control(Volup, Voldown, Mute)

    where Fn0=;, Fn1=/, Fn2=a





Features

--------

Mouse keys

    You can emulates mouse move and button click using keyboard.

System/Media control

    You can sends Power event, Volume down/up and Mute.

USB NKRO(actually 120KRO+8Modifiers)

    You can tolggles NKRO/6KRO.(Not tested on Mac.)

Keymap customization

    You can customize keymaps easily by editing source code.





Build for Teensy

----------------

0. Connect PS/2 keyboard to Teensy by 4 lines(Vcc, GND, Data, Clock).

1. Define following macros for PS/2 connection in config_pjrc.h:

   PS2_DATA_PORT

   PS2_DATA_PIN

   PS2_DATA_DDR

   PS2_DATA_BIT

   PS2_CLOCK_PORT

   PS2_CLOCK_PIN

   PS2_CLOCK_DDR

   PS2_CLOCK_BIT

2. Edit Makefile for build options and MCU setting.

2. make

3. program Teensy.

   http://www.pjrc.com/teensy/loader.html





Build for V-USB

---------------

0. Build V-USB controller board and connect PS/2 keyboard.

1. Define macros in config_vusb.h if needed.

2. Edit Makefile.vusb for build options and MCU setting.

3. make -f Makefile.vusb

4. program your V-USB controller.





V-USB Circuit

-------------

                +---+   +---------------+

USB            GND  |   |   ATmega168   |

===                 C3  |               |

5V <-------+--------+---|Vcc,AVCC       |        PS/2

           R1           |               |        ====

D- <----+--+-----R2-----|INT1        RXD|------->DATA

D+ <----|---+----R3-----|INT0        XCK|------->CLOCK

        Z1  Z2          |               |      ->5V

GND<----+---+--+--+-----|GND            |      ->GND

               |  |     |               |

               |  C2-+--|XTAL1          |

               |     X1 |               |

               +--C3-+--|XTAL2          |

                        +---------------+

R1:     1.5K Ohm

R2,R3:  68 Ohm

Z1,Z2:  Zenner 3.6V

C1,C2:  22pF

C3:     0.1uF

X1:     Crystal 20MHz(16MHz/12MHz)





Keymap

------

You can change a keymap by editing code of keymap.c like following.

How to define the keymap is probably obvious. You can find  key

symbols in usb_keycodes.h.

If you want to define more than one keymap, see hhkb/keymap.c and

macway/keymap.c as examples. To define keymap(layer) switching may

needs a bit of your effort at this time.



    /* Default Layer: plain keymap

     * ,---.   ,---------------. ,---------------. ,---------------. ,-----------.     ,-----------.

     * |Esc|   |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau|     |Pwr|Slp|Wak|

     * `---'   `---------------' `---------------' `---------------' `-----------'     `-----------'

     * ,-----------------------------------------------------------. ,-----------. ,---------------.

     * |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backspa| |Ins|Hom|PgU| |NmL|  /|  *|  -|

     * |-----------------------------------------------------------| |-----------| |---------------|

     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|    \| |Del|End|PgD| |  7|  8|  9|   |

     * |-----------------------------------------------------------| `-----------' |-----------|  +|

     * |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return  |               |  4|  5|  6|   |

     * |-----------------------------------------------------------|     ,---.     |---------------|

     * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shift     |     |Up |     |  1|  2|  3|   |

     * |-----------------------------------------------------------| ,-----------. |-----------|Ent|

     * |Ctrl |Gui |Alt |         Space         |Alt |Gui |Menu|Ctrl| |Lef|Dow|Rig| |      0|  .|   |

     * `-----------------------------------------------------------' `-----------' `---------------'

     */

    KEYMAP(

    ESC, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12,           PSCR,SLCK,BRK,          PWR, F13, F14,

    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,     INS, HOME,PGUP,    NLCK,PSLS,PAST,PMNS,

    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,     DEL, END, PGDN,    P7,  P8,  P9,

    CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,                         P4,  P5,  P6,  PPLS,

    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,          RSFT,          UP,           P1,  P2,  P3,

    LCTL,LGUI,LALT,          SPC,                     RALT,RGUI,APP, RCTL,     LEFT,DOWN,RGHT,    P0,       PDOT,PENT

    ),





EOF